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FASCAT® 4100 Catalyst
Butylstannoic Acid
CAS Registry Number: 2273-43-0
Description
FASCAT 4100 catalyst, butylstannoic acid, is an amorphous white solid. This product is available in 44 lb (20kg) pails and
220 lb (100kg) drums.
Applications
FASCAT 4100 catalyst is used in the synthesis of saturated polyester resins for powder coatings and coil coatings, is used in
the production of unsaturated polyester resins for gel-coat, sheet molding, and cast molding applications, and is also used
to produce polymeric plasticizers.
Product Specifications
Properties Specifications
Formula BuSnOOH
% Sn 56.8
Formula Weight 208.8
Specific Gravity (@25°C) 1.46
Melting Point Decomposes without Melting
Solubility
Insoluble in water and most organics. Dissolves in strong alkaline and mineral acid solutions.
Product Features
FASCAT 4100 catalyst is a solid, hydrolytically stable catalyst that is active at low loadings. It is used primarily to catalyze
esterification and polycondensation reactions at temperature between 210 and 240°C. FASCAT 4100 catalyst begins to
solubilize in carboxylic acid at 80°C during the reaction and becomes incorporated into the final product without affecting
the quality of the product. FASCAT 4100 catalyst can be used at temperatures up to 250°C. It is neutral and non-corrosive.
Benefits
FASCAT 4100 catalyst can significantly shorten esterification times when compared to uncatalyzed systems. It offers
energy savings due to lower reaction temperatures, as well as more efficient use of equipment. FASCAT 4100 catalyst
minimizes side reactions such as dehydration and oxidative degradation of polyhydric alcohols, especially secondary
alcohols. It can be charged up front with other reactants, and requires no special handling other than avoiding excessive
exposure to moisture. FASCAT 4100 catalyst does not require neutralization or filtration at the end of production.
FDA Standards
FASCAT 9100 catalyst is the FDA grade of FASCAT 4100 that satisfies 21 CFR 175.300, 21 CFR 177.2420, and 21 CFR 175.105.
In US
PMC Organometallix, Inc.
The PMC Group Building
1288 Route 73, Suite 401
Mount Laurel, NJ 08054
Customer Service
1.855.638.2549 
(1.855.METALIX)
Fax 1.856.638.2157
www.pmc-group.com
In Europe
PMC Vlissingen B.V.
C/o PMC OUVRIE
44 rue Albert Einstein
62220 CARVIN
FRANCE
Customer Service
33(0)3.91.83.71.56
Fax 33(0)3.91.83.71.92
REV.05.12.13 ©2013 PMC Organometallix, Inc.
The information contained herein is correct to the best of our
knowledge. Your attention is directed to the pertinent Material
Safety Data Sheets for the products mentioned herein. All sales
are subject to PMC Organometallix Inc.’s standard terms and
conditions of sale, copies of which are available upon request
and which are part of PMC Organometallix Inc.’s invoices
and/or order acknowledgements. Except as expressly provided
in PMC Organometallix Inc.’s standard terms and conditions of
sale, no warranty, expressed or implied, including warranties of
merchantability or fitness for a particular purpose, is made with
respect to the products described herein. Nothing contained
herein shall constitute permission or recommendation to
practice any invention covered by a patent without a license
from the owner of the patent.